Interior concrete structural work.



No. 909,999. PATENTBD JAN. 2,1996.

l P. c. GAINE.

INTERIOR CONCRETE STRUCTURAL WORK. ArPLIoATIoN FILED 199.19.24, 1905.

2 SHEETS-SHEET 1.

Flc-9.1. 1,1

Witwe/ooe@ 314909441601/ No. 909,090. PATBNTED 0.901,2, 1909.

F. C. OAINE.

INTERIOR CONCRETE STRUCTURAL WORK. APPLIUATlo-N FILED 90,911.24, 1905.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT oEEroE.

INTERIOR CONCRETE STRUCTURAL WORK.

Specification of Letters Patent.

Patented Jan. 2, 1906.

Application filed March 24, 1905. Serial No. 251,896.

To all whom, it may concern:

Be it known that I, FRANK C. CAINE, a citi- Zen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Interior ConcreteStructural Work; and I do declare that the following is a full, clear,and exact description of the invention, which will enable others skilledin the art to which it appertains to make and use the same.

My invention relates to interior concrete structural work; and theinvention consists in a method of and means for building concrete iioorsand ceilings and in the construction and combination of partssubstantially as shown and described, and particularly pointed out inthe claim.

In the accompanying drawings, Figure l is a cross-section of a portionof a floor comprising two I-beams in cross-section and illustrating howa concrete oor and ceiling is built in with said beams, as hereinafterfully described. Fig. 2 is a cross-section of a floor corresponding toFig. 1, but showing a different construction and arrangement of trussconnections or stays between the said beams. Fig. 3 is a perspectiveview of one of the concrete slabs employed in building up the ceilingand making a platform for the green concrete. Fig. 4 is a plan view of asection of floor corresponding to what is shown in Fig. 5 and showingparts in position to receive the green concrete from above. Fig. 5 is acrosssection on line Fig. 4. Fig. 6 is a crosssection on line y y, Fig.4, at right angles to Fig. 5. Fig. 7 is a cross-section of a modifiedform of slab.

The idea of this invention is to avoid the annoyance and expense ofbuilding up temporary wood supports for concrete floors and ceilings, ashas heretofore very generally been the practice, and to provide acomparatively cheap and effective substitute therefor, whereby acombined concrete floor and ceiling can be laid wlth materially lessinitial outlay for temporary supports and with correspondingly lesslabor and time in the prosecution of such work, all as will hereinafterfully appear. Thus it is presumed that the skeleton-or frame work of thebuilding is of steel, as usual where concrete ioors are used, andcomprises the usual metallic I-beams A at intervals and concrete floorand ceiling built to these beams; but in addition thereto I employintermediate sustaining or reinforcing trusses or stays B lveryexcellent.

and C, respectively, as seen in Figs. l and Q, and in which twodifferent forms of stays are shown, but which are alike engaged over thetop of beams A and serve the same general purpose. In building up afloor and ceiling with these means incorporated therein, but not showingwhen the work is finished, I employ a number of concrete slabs D, madeup to a suitable size and thickness and furnished with embedded ties ortie-strips d of any suitable material, but preferably of wire, adaptedto be twisted, as shown, and furnishing a strong support in itself fromthe stays B or C above. A truss form of stay likeCis deemed Obviouslyall this work is prior and preparatory to building the body of concretethereon from above in a green state, and the said slabs of concreteconstitute a base or platform onto which the green material is pouredand spread and otherwise placed, so as to produce a compact, even, andsolid mass as complete in all essential particulars as if laid in theold way. This of course entails considerable weight upon the iioor ofslabs D, and in order that they may be temporarily reinforced I providea series of fairly heavy wooden beams E beneath said slabs and supportsor bars G for said beams at the top above the space where the iioor isto come and suspend the beams Etherefrom by means of suitable wires g ortheir equivalent and which are arranged to come between the edges of theslabs D and fasten about said beams E.

The bars G at the top are supported temporarily by any suitable meanshere and there over the I-beams, and when all the parts are arranged andbuilt together substantially as seen in Figs. 4 and 5 they are ready toreceive the concrete (marked H) and which not only fills in all theinterstices about beams A and about and over the cross-stays or trussesB and C, embedding the said stays permanently in the concrete body, asin Figs. l and 2, but also becoming thoroughly amalgamated orincorporated with the slabs D and making the entire mass homogeneous andas if it were all built at one time and out of the same material. Theinner surfaces of slabs D are made rough to promote adhesion. When thework is done and the concrete is hardened, the beams or bars E and G areremoved and are adapted to bel used over and over again, and the ceilingis then plastered and finished while the top of the cement-body Hbecomes the floor surface for the room above.

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In Figs. 5 and 6 especially I show how slab D is supported beneath beamA by means of wires 0l about the top of said beam, and the side slabs Drest upon the edges of slabs D.

It will be seen by the foregoing that the only temporary and removablemembers of the entire structure seen in Figs. 4 and 5 are the upper andlower` beams E and G, which remain in place only until the body of thematerial has hardened to a self-sustaining condition. Otherwise all theseveral parts are built in with the concrete and become part of thepermanent structure.

In some instances it may be desirable to mold the bottom or exposedsurface of the slabs D with an ornamental design, and thereby provide anornamental ceiling and which would take the place of the ordinaryplastered ceiling, and the joints would be pointed up and nished in anysuitable manner or could be covered by ornamental molding to give apaneled elfect to the ceiling.

Slabs D are preferably made as light as possible and of such thicknessas will support the green concrete with safety. I may also provide slabsD with recesses or raised projections or dovetailed grooves to morefirmly bind the slabs and the main body of concrete together, andthereby guard against any possible chance of a slab or portion thereoffrom becoming detached and falling.

What I claim is- The I-beams and the cross-stays connecting the same atintervals, concrete slabs suspended from said stays between said beamsand temporary auxiliary supports for said slabs comprising beams beneathand supports above, and means engaging said beams with said supports.

In testimony whereof I sign this specification in the presence of twowitnesses.

` FRANK C. CAINE.

Witnesses:

C. A. SELL, H. T. FISHER.

